The adult occurrence period of Phalera takasagoensis Matsumura was determined based on lamp induction monitoring for many years. The adults emerged in early and mid July, and reached the peak in early and mid August, ending in early September and mid September. Using indoor feeding and field investigation methods, 3 types of larvae were identified for the first time: 5 instars,6 instars and their mixed type. Most of the larvae hatched before the early August and the late mature larvae in late August were mo...